Interesting Ultrasound

I had a high level ultrasound a few weeks ago where they measure, count and look everything over to make sure baby is developing properly. We had this done at the Private Clinic next to ChungShan hospital. The tech was very thorough, even making sure he could count fingers and toes. The size of the baby is good for our due date and everything looked great. We got a few photos, although nothing really good - no profiles or hands waving or anything. After it was over, the tech was trying to portray to us that an ultrasound does not guarantee that the baby will be 100% healthy and normal, but it was quite interesting how he told us this. He would say things like "the baby may have a mouth, but may not be able to speak, the baby has two eyes, but may not be able to see", etc. We understood what he was trying to convey but it was a weird way of hearing it.